Preheat your oven to 425°F (220°C).
In a small bowl, combine the juice of half a lemon, olive oil, chopped fresh herbs, salt, and pepper.
Place the chicken breast in a baking dish and brush it with the lemon-herb mixture, ensuring it is evenly coated.
Peel and cube the sweet potato into bite-sized pieces and place them on a baking sheet. Toss with a bit of olive oil, salt, and pepper.
Cut the broccoli into florets and spread on another baking sheet, lightly drizzled with olive oil, salt, and pepper.
Place the chicken in the oven and roast for about 20-25 minutes, or until the internal temperature reaches 165°F (74°C), turning once if necessary.
Simultaneously, roast the sweet potato and broccoli for 20-25 minutes until they are tender and have crispy edges.
Plate the roasted chicken alongside the sweet potato cubes and crispy broccoli. Drizzle any remaining herb mixture over the top.
Serve warm and enjoy your balanced, nutrient-rich meal.